Add warning of deprecated argument (handle elegantly)

[annahedstroem]

Description

• Added a warning for renamed metric argument

Minimum acceptance criteria

• Specify what is necessary for the PR to be merged with the main branch.
• @mentions of the person that is apt to review these changes e.g., @annahedstroem

[codecov-commenter]

Codecov Report

Attention: 2 lines in your changes are missing coverage. Please review.

Comparison is base (fcd8ded) 91.24% compared to head (d2d7f39) 91.20%.

❗ Current head d2d7f39 differs from pull request most recent head 6366f78. Consider uploading reports for the commit 6366f78 to get more accurate results

Files	Patch %	Lines
quantus/metrics/randomisation/mprt.py	50.00%	2 Missing ⚠️

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Additional details and impacted files

@@            Coverage Diff             @@
##             main     #319      +/-   ##
==========================================
- Coverage   91.24%   91.20%   -0.05%     
==========================================
  Files          66       66              
  Lines        3884     3887       +3     
==========================================
+ Hits         3544     3545       +1     
- Misses        340      342       +2     

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